Sub"tle*ty (?), n.; pl. Subtleties (#). [OE. sotelte, sutilte, OF. sotillete, L. subtilitas. See Subtle, and cf. Subtility.] 1. The quality or state of being subtle, or sly; cunning; craftiness; artfulness.

The fox which lives by subtlety.

2. Nice discernment with delicacy of mental action; nicety of discrimination.

3. Something that is sly, crafty, or delusive.

Unlearned in the world's false subtleties.

Sub"tle*ty (?), n.; pl. Subtleties (#). [OE. sotelte, sutilte, OF. sotillete, L. subtilitas. See Subtle, and cf. Subtility.] 1. The quality or state of being subtle, or sly; cunning; craftiness; artfulness.

The fox which lives by subtlety.

2. Nice discernment with delicacy of mental action; nicety of discrimination.

3. Something that is sly, crafty, or delusive.

Unlearned in the world's false subtleties.

• something subtle
  
• the characteristic of being subtle
       With all his usual subtlety, he quietly fixed the problem before anyone else noticed it.
  
• a medieval dish, usually a form of dessert
       At the king's coronation feast, several subtleties were served between main courses.